Gate valve



Feb. 16 1926. 1,572,984

A. BTTNER l l GATE VALVE Filed May 4, 1925 In venan- Patented Feb. 16,1926.

UNITED STATES PATENT OFFICE.

ARNO BTTNER, 0F SUDENBU'RG, NEAR MAGDEBURG, GERMANY, ASSIGNOR 'IO THEFIRM PQLTE, OF MAGDEBURG, GERMANY.

GATE VALVE.

.Application filed May 4, 1925. Serial No. 27,920.

To all who/m, et may concern:

Be itknownthat I, ARNO B'rTNnn, a citizen of the German Republic,residing at No. 58 llelmstedterstrasse, 4Sudenbiirg, near Magdeburg,Germany, have invented certain new and useful Improvements in GateValves (for which I have filed application for patent in Germany datedJuly 19, 192B), -of which the following is a specification.

My invention pertains to that class of parallel glide stop valves orgate valves for use in steamconduits and the like in which two parallelcut olf plates are provided and adapted to be moved up and down foropening and closing purposes.

In my prior Patent No. 1,550,338, filed January 29, 1925, Ihavedisclosed an in1- proved gatevalve of the above stated type and thepresent invention relates more particularly to a further improvementthereof aiming to provide a Valve which is more convenient tokmanipulate.

With this object in view I construct the eccentric body or bodiesenclosed between the cut-oit plates so as to be of conical shape andprovided with diametral or horizontalY bores for the passage ofthesteannthe arrangement of the parts being such that upon turning thevalve spindle in the one direction the plates will be forced against andin contact with the opposite sealing faces in order to close the valve,while upon turning the spindle in opposite direction the plates will bewithdrawn from the said faces in Order to open the valve.

The improved i construction `above indicated affords the advantage of amore ready movability of the valve for closing and opening purposes'andof a quick passage of the steam therethrough so that the valve will bebalanced more readily. Furthermore the conduit section past the valvewill be heated by the intruding steam in a more' suitable and gradualmanner so that heavy jerks and fractures in the conduit are avoided.` Inmost cases it will answer the purpose well if only the inner, conicalbody is provided with a transverse bore or opening fork the steam topass therethrough, while the two outer bodies that is the one on top and4illustrating the same when closed.

the one below theformer, may be of 4cylindrical shape without any boresor passages. The conical portions are for the purpose of providing atight lit in order to prevent the leakage of the fluid and therefore theconical surfaces are necessary only in the portions which are providedwith the bores or passages. Tl'lerefore, if only a central passage isprovided the portion 2 only need be conical and the portions l and 5 maybe cylindrical.

The structure embodying the novel features of my invention ishereinafter more fully described and illustrated in the accompanyingdrawings forming a part of this specification, in which y Figure l is avertical section of the valve taken on the line l-l of Figure 2; Figure2 is a horizontal section taken on line 2--2 of Figure l; Figures 3 and4; are sectional views similar to Figures 'l and 2, respectively, butshowing the movable parts of the valve in a different position. i

Parts which are repeated in the seveal ligures bear the same referencecharacters in each case, Figures 1 and@ showing the valve in openposition and Figures 3 and 4 v It is, however', to be noted that in theembodiment shown in the drawings by way of'example. for clearness sakeonly those portions of the casing and the spindle are illustrated whichare in contact with the said plates while all of the other portionsthereof and thev other constituent parts of the valve are not shown asthey may be of any conventional type known to persons versed in the art,and may be constructed to operate the valve, for eX- ample, in suchamanner that the cutoff plates will move up and down with the spindle onturning a co-operating handV 90 so that upon turning the spindle the twoplates 3 and 6 are moved in opposite directions either towards eachother, in case of closing the valve, or away from each other for theopening purpose, as will be clearly understood from an inspection oftheA drawings.

As soon as, on causing the spindle to move down, as hereinbeforedescribed, the cut-off plates 3 and 6 adopt aposition in axialalineinentwith the casing, a rotary motion will be imparted to thespindle in the usual way whereby also the enlargements 2, l and 5 of thespindle are turned 90 so that the parts will have the positionsvdepicted in Figures 3 and 4:, that is to say, with the cutoff plates 3and '6 in closing or 'closed position and the bores, .vents or passages4p'rovided in the bodies or enlargements 2, and 5 of the stem, in closedor inactive position as clearly seen in Figure 4.

The bodies or enlargements 2, 4 and 5 are fitted in correspondinglyshaped bores of lugs lO, l1 and l2 projecting inward from the plates 3and 6 in staggered relationship.

In case of opening the valve the actuation and movement of .the parts.is in inverse order, that islto say, the spindle and the con icalbodies or enlargements integral therewith are caused to first rotate 90Ofrom the position shown in Figures 3 and 4; to `that illustratedinFigures l and 2, so that the bores, vents or passages therein will bediscovered and active to allowthe fiuid to pass therethrough, and then,upon continued actuation of the han'd wheel, to rise without turning, sothatthe cut-off plates 3 and 6 will be mov-ed out of alineineiit withthe casing 9 and the full area ofthe valve willbe free and open.v

In the position of the spindle shown in Figures l and 2, the rotarymovement of the sameis terminated and the cut-off plates 3 and G arewithdrawn from their respective co-operating faces 7 and 8 of the casing9. In. order to fully clear the passage of the valve the spindlel andthe plates 3 and G are then moved upwards with the aid of constructionalmeans and in the manner usual in valves of the class to which thedescribed valve pertains. Y

In the position of the spindle illustrated iii'Figures 3 and 4 the sameis displaced, with relation to the showing' of Figures 1 and 2, owing toa rotation of 90o in the direction ofthe arrow shown in Figure 4', andthe cut-off plates 8 and Gare in intimate contact with the respectivelyopposite faces 7 and 8 of the casing 9 so that the valve is completelyvclosed.

'It will be evident that my invention while being adhered to in its mainessentials, may be lvaried and adapted in ymany ways, according to theseveral requirements desired, or most suitable under differentcircumstances, without thereby departing from the spirit of theinvention or the spirit and scope of the appended claims.

That I claim is l. A device for operating a valve of the character setforth, comprising a casing, two

shutting plates adapted to be -moved vertically with regard to and insaid casing, a spindle connected with the said plates 'for moving thevsame, eccentrical enlargements at the lower end of the said spindle oneof `which is of conical shape, and lugs with bores projecting inwardfrom the said plates for the receptiontof the said enlargements,substantially as and for the purpose set forth.

2. A device forvoperating a valve -of the character set forth,comprising a casing, tWo shutting plates adapted to be moved verticallywith regard to and in 'said casing, a spindle connectedw-iththe saidplates for moving 'the same, superposedeccentrical enlargements fofconical shape at the lowerend of said spindle, and lugs with boresprojectsaid, enlargements, substantially as and for a the purpose setforth;

4. VA 4device for operating a valve and for the purpose and lcharacterset forth, vcoinpi'ising a casing, two shutting plates adapted to bemoved vertically in respect to and in said casing, `a spindle connectedwith the said two platesl for moving lthe same-,superposed eccentricalenlargements vof conical shape at the :lower end of said spindle,transverse bores or'passages in the said con-ical enlargements, andlugs-withbores projecting inward from the-said'plates for thereceptionof the said enlargements, substantially as and for the purpose setforth.

A device for operating ya valve coinprisiiig a casing; apaiiof'shuttiiig plates -in said casing each provided with a laterallprojection and a passage;=and a spindle `having a pair ofleccentrics'thereon at least one of which has a conicalshape and eachofwhich is adapted to operate one `ofsa-id shutting plates by means of itslateral projection in order to impart a lateral 'inoveineint to saidplates when said spiiidlehis actuated, said with the passage in theplates in order to allow a partial passage for the fluid.

6. A device for operating a valve comprising a casing; a pair ofshutting plates in said casing each provided with a lateral projectionand passages; and a spindle having conical eccentrics therein, eachheilig adapted to operate one of said shutting plates by means of itslateral projection in order to impart a lateral movement to said plateswhen said spindle is actuated, said spindle having passages thereinwhich are adapted to cooperate with the passages inthe plates in orderto allow a partial passage 'for the fluid.

In testimony whereof I aflix my signature.

Anno BTTNER.

